MESON Chess Problem Database

Problem Display
PID: 235559 (3rN2Q/3nB3/3b2n1/Rb3k1P/1N6/4PPqP/K1Rp4/1B6 w - - 0 1)

Hannelius, Jan Ingvar

Skakbladet, 1945

3rN2Q/3nB3/3b2n1/Rb3k1P/1N6/4PPqP/K1Rp4/1B6

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb4
      • 2.Rc6#
    • 1...Bf4
      • 2.Rc6#
    • 1...Bc7
      • 2.Rc6#
    • 1...Bb8
      • 2.Rc6#
    • 1...Sc5
      • 2.Qf6#
    • 1...Se5
      • 2.Sg7#
      • 2.Qf6#
    • 1...Sb6
      • 2.Qf6#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sb8
      • 2.Qf6#
    • 1...Sf8
      • 2.Qf6#
  • Keys
    • 1.Qg8!
      • threat
        • 2.Rc5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Qe5
        • 2.Qxg6#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Be5
        • 2.Rc4#
      • 1...Sge5
        • 2.Sxd6#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sde5
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • B(e);XS(G)::B(A)+R(C)
    • B(e);::B(A)+R(C)
    • S(g);N_GUARD,N_SPINB(c)::QAR1(L)
    • S(g);N_GUARD::QAR1(L)
    • S(g);N_GUARD::QAR1(L),XS(g)
  • Actual
    • Q(L);
    • Threat
      • B(A)+R(C),DCHECK
    • Vars
      • K(d);P-FLIGHT::QAR1(L)
      • Q(b);N_GUARD,N_SPINB(c),SBLOCK::QAB1(L),XS(f)
      • B(e);N_SPINB(c)::B(A)+R(C),DCHECK,XB(e)
      • B(e);N_SPINB(c),SBLOCK::B(A)+R(C)
      • S(f);N_SPINB(c),SBLOCK,S_CUTQ(b)::S(K),XB(e)
      • S(g);N_SPINB(c)::B(A)+R(C),DCHECK,XS(g)
      • S(g);N_SPINB(c),SBLOCK::S(K)
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